<template>
  <div class="welcome">
    <img src="../assets/bac.jpg" alt="">
    <div style="color: red;height: 7000px">123</div>
  </div>
</template>

<script>
export default {
name: "welcome"
}
</script>

<style scoped lang="scss">
.welcome{
  width: 100%;
  height: 100%;
  img{
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: -1;
  }
}
</style>
